R. David Hall, a Ward 2 candidate for the D.C. school board, said yesterday he has not filed his federal or District of Columbia income tax returns for l979 and l980.

Hall, a real estate broker, said he delayed filing the returns because the real estate partnership he belonged to in l979 -- Century 21 Living Space Unlimited -- was disbanding and he did not know whether to claim his financial contributions to the partnership as a investment loss or as depreciable assets.

Hall won the support this week of the D.C. Committee for a Better School Board whose members include former superintendent Vincent E. Reed, Ward 3 school board member Carol Schwartz and several former school board members.

Reed said yesterday that the committee did not research the financial background of any of the candidates. He said he did not know if knowlege of Hall's tax status would have prompted the committee to change its decision to recommend the election of Hall.

Hall, 32, the founder of the D.C. Street Academy, an alternative program for high school dropouts, and a newcomer to city politics, is running against incumbent Ward 2 board member Alaire B. Rieffel and Marjorie Maceda, a Catholic school teacher and president of the Amidon Parent Teacher Association.

Hall said he was "investigated" by the Internal Revenue Service each year from l976 to l978 and in each of those years was required to pay up to $300 more in taxes. He said one of the reasons he has not filed his l979 tax return was because he did not want to be accused of falsely claiming losses from his real estate partnership, which would have made him liable for criminal penalties.

"I don't believe this has any direct bearing on what R. David Hall can or cannot do for the schools in Ward 2," Hall asserted.

Hall said that as a result of The Post's inquiries into his taxes he intends to send a letter to the IRS stating that he is prepared to file his 1980 tax return and pay any taxes owed. He said he expects that he will have to pay a penalty for the late filing. He added that he is still waiting for his accountant's decision on what to do about his 1979 taxes.

Hall's accountant, Ralph Benson, said he had not completed Hall's taxes for either year, but believed Hall had enough taxes withheld from salaries so he would not owe any more. Benson said that in both years Hall had filed for time extensions to submit his returns, but that the extensions have now expired.

Hall declined to reveal his net personal income for 1979 and 1980, saying that he would not know it until his accountant had figured his net losses against his income.

Hall said in a financial statement filed with the D.C. Office of Campaign Finance that he earned an annual salary of $23,000 as board chairman and executive director of the D.C. Street Academy. But the statement only requires that candidates disclose any income they receive from any business that has financial transactions with the city government.

The financial statement also says Hall owns rental properties at 1317 Q St. NW; 1327 Q St. NW; 556 LeBaum St. SE; 567 LeBaum St. SE and 1941 2nd St. NW.

Hall said he decided to run for the school board because he felt the public is "fed up with the foolishness on the board." He said he felt he could help lend an image of "understanding, leadership and confidence" to the board.

He said, if elected, he would try to reduce the board members' current salary of about $18,000 each to about $7,000.

A Cardozo High School graduate, Hall also graduated from Georgetown University Law School, but is not a member of the D.C. Bar. He said he cofounded the Minority Legislative Education Program in 1974 to help train members of minority groups for positions as staff members, legislative assistants and lobbyists on Capitol Hill. Hall founded the D.C. Street Academy when he was 21.