Education; teachers; additional probationary period for tenured teachers; provide for under certain circumstances, require annual evaluations of tenured teachers to determine effectiveness, and make other revisions to teacher tenure act regarding probationary teachers. Amends secs. 1, 2, 3 & 3a, art. II & secs. 1, 2 & 3, art. III of 1937 (Ex Sess) PA 4 (MCL
38.81 et seq.) & adds secs. 3b & 3c to art. II & secs. 1a & 1b to art. III.