The investment objective of the DFA Investment Grade Portfolio (the "Investment Grade Portfolio") is to seek to maximize total returns from the universe of eligible investments. Total return is comprised of income and capital appreciation.

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FEES AND EXPENSES OF THE PORTFOLIO

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This table describes the fees and expenses you may pay if you buy and hold shares of the Investment Grade Portfolio.

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Shareholder Fees (fees paid directly from your investment):

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

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February 28, 2013

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Portfolio Turnover

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The Investment Grade Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Portfolio's performance. During the most recent fiscal year, the Portfolio's portfolio turnover rate was 18% based on the weighted average portfolio turnover ratios of each of the Portfolio's underlying investments.

Portfolio Turnover, Rate

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18.00%

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Example

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This Example is meant to help you compare the cost of investing in the Investment Grade Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio's operating expenses remain the same. The costs for the Investment Grade Portfolio reflect the net expenses of the portfolio that result from the contractual fee waiver in the first year only. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

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PRINCIPAL INVESTMENT STRATEGIES

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Dimensional Fund Advisors LP (the "Advisor") believes that fixed income investing should involve a long-term view and a systematic focus on bond market risk and return, not on interest rate forecasting or market timing.

The Investment Grade Portfolio seeks to achieve its investment objective through exposure to a broad portfolio of investment grade debt securities of U.S. and non-U.S. corporate and government issuers. To achieve this exposure, the Advisor will generally purchase shares of the Short-Term Extended Quality Portfolio, Intermediate-Term Extended Quality Portfolio, Short-Term Government Portfolio, and Intermediate Government Portfolio (the "Underlying Funds"), which are other funds managed by the Advisor. The Investment Grade Portfolio currently intends to allocate its investments among the Underlying Funds in the following manner: 40% to 80% in the Short-Term Extended Quality Portfolio and Intermediate-Term Extended Quality Portfolio; and 20% to 60% in the Short-Term Government Portfolio, and Intermediate Government Income Portfolio. In addition to, or in place of, investments in the Underlying Funds, the Investment Grade Portfolio also is permitted to invest directly in investment grade fixed income securities. As a non-fundamental policy, under normal circumstances, at least 80% of the Investment Grade Portfolio's net assets will be invested directly, or indirectly through its investment in the Underlying Funds, in fixed income securities considered to be investment grade quality.

The Investment Grade Portfolio will be managed with a view to capturing credit risk premiums and maturity risk premiums. The term "credit risk premium" means the expected incremental return on investment for holding obligations considered to have greater credit risk than direct obligations of the U.S. Treasury, and "maturity risk premium" means the expected incremental return on investment for holding securities having longer-term maturities as compared to shorter-term maturities. In making the allocation decisions among the Underlying Funds, the Advisor will increase or decrease investment in Underlying Funds that provide exposure to intermediate-term securities depending on the expected maturity risk premium and also increase or decrease investment in Underlying Funds that provide exposure to non-government securities depending on the expected credit risk premium.

The Short-Term Extended Quality Portfolio and Intermediate-Term Extended Quality Portfolio (collectively, the "Extended Quality Portfolios") each invest in a universe of U.S. and foreign corporate debt securities with an investment grade credit rating. Each Extended Quality Portfolio invests with an emphasis on a universe of U.S. and foreign corporate debt securities the Advisor considers to be of extended quality as they are rated in the lower half of the investment grade spectrum (i.e., rated BBB- to A+ by Standard & Poor's Rating Group ("S&P") or Fitch Ratings Ltd. ("Fitch") or Baa3 to A1 by Moody's Investor's Service, Inc. ("Moody's")). An Extended Quality Portfolio will not emphasize investments in the lower half of the investment grade spectrum, however, when the Advisor believes the credit risk premium does not warrant the investment. Each Extended Quality Portfolio will also invest in higher-rated corporate debt securities, obligations issued or guaranteed by the U.S. and foreign governments, their agencies and instrumentalities, bank obligations, commercial paper, repurchase agreements, obligations of other domestic and foreign issuers having investment grade ratings, securities of domestic or foreign issuers denominated in U.S. dollars but not trading in the United States, and obligations of supranational organizations. At the present time, the Advisor expects that most investments for an Extended Quality Portfolio will be made in the obligations of issuers that are located in developed countries.

The Short-Term Extended Quality Portfolio primarily invests in securities that mature within five years from the date of settlement and maintains an average portfolio maturity and average portfolio duration of three years or less. The Intermediate-Term Extended Quality Portfolio primarily invests in securities that mature within three to fifteen years from the date of settlement and maintains an average portfolio duration of between three years and ten years.

Each Extended Quality Portfolio's investments may include foreign securities denominated in foreign currencies. Each Extended Quality Portfolio intends to hedge foreign currency exposure to attempt to protect against uncertainty in the level of future foreign currency rates. Each Extended Quality Portfolio may enter into foreign forward currency contracts to hedge against fluctuations in currency exchange rates or to transfer balances from one currency to another. Each Extended Quality Portfolio also may enter into credit default swaps on issuers or indices to buy or sell credit protection to hedge its credit exposure; gain market or issuer exposure without owning the underlying securities; or increase the Portfolio's total return. Each Extended Quality Portfolio also may use derivatives, such as futures contracts and options on futures contracts, for non-hedging purposes as a substitute for direct investment or to allow the Portfolio to remain fully invested while maintaining the liquidity required to pay redemptions.

The Short-Term Government Portfolio and Intermediate Government Portfolio (collectively, the "Government Portfolios") each invest in a universe of high quality, non-callable obligations of the U.S. government and its agencies. The Short-Term Government Portfolio invests in securities maturing in five years or less from the date of settlement and the Intermediate Government Portfolio invests in securities with maturities of between five and fifteen years from the date of settlement. Each Government Portfolio is authorized to invest more than 25% of its total assets in Treasury bonds, bills and notes and obligations of federal agencies and instrumentalities. The Short-Term Government Portfolio expects that the Portfolio's average portfolio maturity and average portfolio duration will be three years or less. The Intermediate Government Portfolio expects to maintain a weighted average portfolio maturity of between three to ten years.

In addition to U.S. government and agency obligations, the Intermediate Government Portfolio also invests in AAA-rated, dollar-denominated obligations of foreign governments and obligations of supranational organizations. The Intermediate Government Portfolio also may invest in futures contracts on U.S. Treasury securities or options on such contracts for the purposes of remaining fully invested and maintaining liquidity to pay redemptions.

The Investment Grade Portfolio and Underlying Funds may lend their portfolio securities to generate additional income.

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PRINCIPAL RISKS

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Fund of Funds Risk: The investment performance of the Investment Grade Portfolio is affected by the investment performance of the Underlying Funds in which the Portfolio invests. The ability of the Portfolio to achieve its investment objective depends on the ability of the Underlying Funds to meet their investment objectives and on the Advisor's decisions regarding the allocation of the Portfolio's assets among Underlying Funds. There can be no assurance that the investment objective of the Portfolio or any Underlying Fund will be achieved. Through its investments in the Underlying Funds, the Portfolio is subject to the risks of the Underlying Funds' investments. The risks of the Underlying Funds' investments are described below.

Market Risk: Even a long-term investment approach cannot guarantee a profit. Economic, political, and issuer-specific events will cause the value of securities, and the Underlying Funds that own them, and, in turn, the Investment Grade Portfolio itself, to rise or fall. Because the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.

Interest Rate Risk: Fixed income securities are subject to interest rate risk because the prices of fixed income securities tend to move in the opposite direction of interest rates. When interest rates rise, fixed income security prices fall. When interest rates fall, fixed income security prices rise. In general, fixed income securities with longer maturities are more sensitive to these price changes.

Credit Risk: Credit risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal when due. A downgrade to an issuer's credit rating or a perceived change in an issuer's financial strength may affect a security's value, and thus, impact an Underlying Fund's performance. Government agency obligations have different levels of credit support and, therefore, different degrees of credit risk. Securities issued by agencies and instrumentalities of the U.S. government that are supported by the full faith and credit of the United States, such as the Federal Housing Administration and Ginnie Mae, present little credit risk. Other securities issued by agencies and instrumentalities sponsored by the U.S. government, that are supported only by the issuer's right to borrow from the U.S. Treasury, subject to certain limitations, and securities issued by agencies and instrumentalities sponsored by the U.S. government that are sponsored by the credit of the issuing agencies, such as Freddie Mac and Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities issued or guaranteed by the credit of the agency may still involve a risk of non-payment of principal and/or interest.

Income Risk: Income risk is the risk that falling interest rates will cause the Investment Grade Portfolio's income to decline.

Foreign Securities and Currencies Risk: Foreign securities prices may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or (b) less regulated or liquid securities markets. Investors holding these securities may also be exposed to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, changing its value against the U.S. dollar).

Foreign Government Debt Risk. The risk that: (a) the governmental entity that controls the repayment of government debt may not be willing or able to repay the principal and/or to pay the interest when it becomes due, due to factors such as political considerations, the relative size of the governmental entity's debt position in relation to the economy, cash flow problems, insufficient foreign currency reserves, the failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies, and/or other national economic factors; (b) governments may default on their debt securities, which may require holders of such securities to participate in debt rescheduling; and (c) there is no legal or bankruptcy process by which defaulted government debt may be collected in whole or in part.

Derivatives Risk: Derivatives are instruments, such as futures and foreign exchange forward contracts, whose value is derived from that of other assets, rates or indices. Derivatives can be used for hedging (attempting to reduce risk by offsetting one investment position with another) or non-hedging purposes. The use of derivatives for non-hedging purposes may be considered more speculative than other types of investments. When an Underlying Fund uses derivatives, the Underlying Fund will be directly exposed to the risks of those derivatives. Derivative instruments are subject to a number of risks including liquidity, interest rate, market, credit and management risks, and the risk of improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and the Investment Grade Portfolio could lose more than the principal amount invested. Additional risks are associated with the use of credit default swaps including counterparty and credit risk (the risk that the other party to a swap agreement will not fulfill its contractual obligations, whether because of bankruptcy or other default) and liquidity risk (the possible lack of a secondary market for the swap agreement).

Securities Lending Risk: Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, an Underlying Fund may lose money and there may be a delay in recovering the loaned securities. An Underlying Fund could also lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral. Securities lending also may have certain adverse tax consequences. To the extent that the Investment Grade Portfolio holds securities directly and lends those securities, it will be also subject to the foregoing risks with respect to its loaned securities.

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Because the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.

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PERFORMANCE

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Performance information is not available for the Investment Grade Portfolio because it has less than one calendar year of performance. Updated performance information for the Portfolio can be obtained in the future by visiting www.dimensional.com.

Performance One Year or Less [Text]

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Performance information is not available for the Investment Grade Portfolio because it has less than one calendar year of performance.

Performance Availability Website Address [Text]

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www.dimensional.com

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The Advisor has agreed to waive certain fees in certain instances for the Investment Grade Portfolio. The Fee Waiver Agreement for the Investment Grade Portfolio will remain in effect through February 28, 2013, and may not be terminated by the Advisor prior to that date. Under certain circumstances, the Advisor retains the right to seek reimbursement for any fees previously waived and/or expenses previously assumed up to thirty-six months after such fee waiver and/or expense assumption.