NEW YORK CITY, Oct. 26--Dean Bundy outlined a four-point program through which secondary schools can make "an unparalleled contribution to American education" in a speech to the College Entrance Board conference here today.

Because of the vast increase in numbers of college applicants expected during the next 15 years, he explained, "secondary schools will be driven to place increased weight on quality of preparation and to produce better prepared students." He suggested four guides for secondary school improvement:

(1) A continued and intensified effort to produce better writing and better comprehension of written English on the secondary school level.

(2) More advanced mathematics in secondary school, including the study of calculus, a subject "perfectly comprehensible to 17-year-olds."

(3) Emphasis on "learning one foreign language well, rather than several poorly."

(4) Raising the standard of American History instruction through increased recognition that college-level work in this field is being achieved in high schools.

"Educational Progress"

Bundy expressed the hope that colleges and secondary schools would, by working together, achieve "great educational progress" in the next five to 15 years as they cope with the problem of greatly increased numbers of applicants.

Increasing selectivity of admissions will provide the stimulus for greater development of a student's potentials in secondary schools, Bundy said. This, in turn, will provide the college with better material to work with, he added.

232,000 Tests

Meanwhile, the conference at its afternoon business session approved a revised budget, which provides for the testing of an estimated 232,000 college candidates this year. Earlier estimates had placed the number at only 180,000. The figure last year was 170,000 and five years ago only 75,000.

Other speakers besides Bundy at the morning session were Professor B. Alden Thresher, Director of Admissions at M.I.T., and Miss Mary E. Chase, Director of Admissions at Wellesley.