| Class clarifier | 15 |
| Class closer? | 13 |
| Class closing? | 14 |
| Class clown | 11 |
| Class clown taken apart by the teacher? | 39 |
| Class clown's "reward," often | 43 |
| Class clown's bit | 21 |
| Class clown's doings | 24 |
| Class clown's punishment? | 29 |
| Class clown, at times | 21 |
| Class clown, e.g. | 17 |
| Class clown, often | 18 |
| Class clowns | 12 |
| Class clowns, e.g. | 18 |
| Class clowns? | 13 |
| Class competition | 17 |
| Class comprising ants, flies, etc. | 34 |
| Class comprising the birds | 26 |
| Class conducted online | 22 |
| Class conscious one | 19 |
| Class covering airways | 22 |
| Class cutter | 12 |
| Class cutters | 13 |
| Class cutup's comeuppance | 29 |
| Class day division | 18 |
| Class distinction | 17 |
| Class distinctions? | 19 |
| Class distraction | 17 |
| Class distribution | 18 |
| Class division | 14 |
| Class doctrine | 14 |
| Class during which a kindergartner might finger-paint | 53 |
| Class ender | 11 |
| Class exam | 10 |
| Class excursions | 16 |
| Class favorites | 15 |
| Class featuring syllogisms | 26 |
| Class fig. | 10 |
| Class figs. | 11 |
| Class following kindergarten | 28 |
| Class fool | 10 |
| Class for a 4-year-old, briefly | 31 |
| Class for a four year old, briefly | 34 |
| Class for a high-school soph, maybe | 35 |
| Class for a new American: Abbr. | 31 |
| Class for a philosophy major | 28 |
| Class for aliens Abbr.: | 23 |
| Class for aliens, briefly | 25 |
| Class for aliens: Abbr. | 23 |
| Class for an aspiring poker player? | 35 |
| Class for anglers? | 18 |
| Class for beginner cooks | 24 |
| Class for budding painters | 26 |
| Class for cooking, sewing, etc. | 31 |
| Class for EMTs | 14 |
| Class for foreigners: abbr. | 27 |
| Class for future MDs | 20 |
| Class for future U.S. citizens | 30 |
| Class for immigrants (abbr.) | 28 |
| Class for immigrants: Abbr. | 27 |
| Class for intl. students | 24 |
| Class for making sweaters? | 26 |
| Class for many US immigrants | 28 |
| Class for moms-to-be | 20 |
| Class for neophyte cooks | 24 |
| Class for newcomers to America, for short | 41 |
| Class for non-native speakers: Abbr. | 36 |
| Class for potential painters | 28 |
| Class for prospective US citizens | 33 |
| Class for recent immigrants: Abbr. | 34 |
| Class for some immigrants, for short | 36 |
| Class for some U.S. citizens-to-be | 34 |
| Class for some would-be citizens | 32 |
| Class for the Durham Bulls | 26 |
| Class for the hotheaded | 23 |
| Class for tots | 14 |
| Class for U.S. citizens-to-be | 29 |
| Class for U.S. immigrants | 25 |
| Class for U.S. newcomers | 24 |
| Class for unsuccessful gardeners? | 33 |
| Class for US citizens-to-be | 27 |
| Class full of giggles | 21 |
| Class full of jokes | 19 |
| Class grade factor | 18 |
| Class graded on a curve? | 24 |
| Class group | 11 |
| Class group: Abbr. | 18 |
| Class handout | 13 |
| Class head | 10 |
| Class highlight | 15 |
| Class hours | 11 |
| Class identification | 20 |
| Class in Calcutta | 17 |
| Class in factories | 18 |
| Class in Hindu society | 22 |
| Class in role-playing games | 27 |
| Class in the minor leagues | 26 |
| Class in the phylum Arthropoda | 30 |
| Class in which AIDS is discussed | 32 |
| Class in which DNA is a topic | 29 |