More appropriate for kids than CT-ART which is too difficult. For a more complete treatment that more or less walks the student through a learning optimal repetition cycle, try Chessimo. Chessimo also has excellent Endgame and Strategy units.

Also for the post 800 level. Each game teaches one or two specific positional ideas. A wonderful way to learn. They will also learn example openings and tactics at the same time. It's too ambitious, in my opinion to try to take kids through My System or similar comprehensive treatments.

Critics tend to pan this, but I found that it has several benefits: it's gradual, it's easy, it introduces a chess hero.

Watch this first! Most kids are chomping at the bit to play chess after watching this movie. Enjoyable for the whole family.

Fun presentation.

If you're a beginner, read for yourself to get a better understanding of positional chess.