What size cello should 11-13 year olds get?

For 11-13 year olds, a 3/4 size cello is typically recommended, as it accommodates their height and arm length while allowing for comfortable playing. However, it's essential to consider the individual player's size and comfort; some taller students may opt for a full-size (4/4) cello. It's best to try out different sizes at a music store or consult with a teacher to find the best fit.