Worm makes a surprising discovery -- teachers have birthdays! That means Worm and his friends have to find the perfect present for their teacher, Mrs. Mulch. Interest Level: K-3 Reading Level: 1.7 ATOS Book Level: 1.9 AR Interest Level: LG AR Points: .5 AR Quiz: 159011EN Reading Counts Level: 2.1 Reading Counts Points: 1 Lexile Measure: 330.