4  Column holds up catapult of a schoolboy (9)

 9  He always wants to have king George install bishop in Welsh town (7)

10 Fighting females from Samoa and NZ, perhaps? (7)

11 It’s found in wrought iron, following partner to bolt food (9)

13 Boy’s new independent cricket side returned (5)

15 He wrote about toys and a boy left in a pit (5)

16 Sound coming from stable popular government after question about pub (9)

18 Queer lad worried about head of class given new coat (9)

19 Head of school is not a good person (5)

20 Dip in arousal’s alarming (5)

22 Plant found in part of school with water seepage, I hear (5-4)

25 Order is just set out around middle of September (7)

27 What’s part of dessert? Thanks – processed curds sandwiches (7)

28 In digestive system, find Polo-shaped new foodstuff (9)

29 Dapper, like King Cole? (5)

 1  A boy at Hogwarts inhales last of laughing gas (5)

 2  Wise guy’s well-presented Guinness, say (5,4)

 3  1927’s a fictional setting for this (6,9)

 4  Sort of Persian, not English or Norse (5)

 5  Old man confiscates eastern ammo from schoolboy’s shooter (3)

 6  What a person’s expected to do in class: not repeat mistakes (5,4,6)

 7  In the middle of New Guinea, supporting first principle of Latin lesson (5)

 8  Where to see pupils heading off, agreed? (3)

12 Father and Scots boy held up nymph (5)

14 Allowed to run away (5)

15 Way of working with the French agents (5)

16 Leaders in war office, reckoned to have merit (5)

17 Travelling on nite train? (9)

21 Group of schoolkids not starting to climb over rope (5)

23 Meeting of shotgun and cutlass allowed by censor (5)

24 Rag on extremely dirty child (5)

25 Prison governors undermine judiciary at first, when upset (3)

26 Singular working boy (3)