Under the Blue Sky- TNT

David Eldridge's loosely linked trilogy of half-hour plays looks at what three pairs of teachers get up to once the kids have gone home, portraying them as every bit as emotionally confused as their pupils.

After years of close friendship, Helen still can't accept Nick really doesn't want anything more; having been dumped yet again, slutty Michelle finds that things turn unexpectedly nasty when she drunkenly seduces wimpish, virginal Graham; and, most memorably, an older woman (Francesca Annis) tries to persuade Nigel Lindsay's comfortingly plump, but much younger Robert to discontinue their platonic holidays.

Comic, disturbing and ultimately heart-warming, these well-acted duets from 2000 touch on broader matters, but mainly show that those who teach still have a lot to learn.

Duke of York's Theatre, St Martin's Ln, WC2 (0870-060 6623). Until September 20. £15-£47.50