Patients in both arms also receive vincristine (VCR) and daunorubicin hydrochloride (DNR) once weekly in weeks 2-5; asparaginase (ASP) on days 12-33; cyclophosphamide (CPM) on days 36 and 64; cytarabine (ARA-C) in weeks 6-9; mercaptopurine (MP) on days 36-63; and MTX IT on days 1, 12, 33, 45, and 59.*