The National League U19 Alliance encounter at the Buccleuch Academy ended all-square despite Kettering twice leading.
It completed a quickfire double between the sides, with United having won 3-0 at The Jakemans Stadium a fortnight earlier.
Boston (4-3-3): Nick Ivanov; Jamie Gaukroger, Harry Cranfield, Daniel Fisher, Nathan Stevens (Mido Turki 58); Lewis Bontoft (Elliott Ramsden 71), Marshall Young, Jenson Bark; Xander Crashley, Harrison Holland, Will Jackson. Sub (not used): Cole Willerton.