Schoolboy trackmen of the Massachusetts High School Athletic Association will compete for the last time this season when they start their eighth annual meet in the Stadium at 2 o'clock today.

Thirty-three high schools have entered runners, making a total of 425 contenders for the individual champiohships. The schools are divided into two classes, the larger institutions being listed in class A, and the smaller in class B.

Class A Enters 147 Men

In class A will be 147 runners, representing Brockton, Brookline, Lawrence, Lowell, Lynn Classical, Lynn English, Medford, and Newton High Schools.

Class B contestants number 278, entered by Arlington, Belmont, Beverly, Concord, David Prouty of Spencer, Fairhaven, Haverhill, Leominster, Lexington, Malden, Mariborough, Methuen, Milton, Needham, Newburyport, Quincy, Salem, Somerville, Taunton, Wakefield, Watertown, Winchester, Winthrop, Woburn, and Worcester Commerce High Schools.

Medford Favored to Win

Medford High is favored to win the class A title of the meet, with Brookline, Newton, and Lawrence Highs as runners-up. Dorchester High, winner last year by a half-point over Lowell High, defaulted in the City of Boston championships this week and has not entered the meet.

Medford won the first championship in 1921. Newton took the title the following year. In 1923 the schools were divided into two classes, and Medford won class A, tying the next year with Brockton. Taking the meet in both following years, Brockton retained the title longer than any other school has done. The chief trophy of the meet is the Harvard Cup, which must be won five years before it goes permanently to the winning school.