Family households with kids need toilets that are: (1) reliable — strong flush that handles inappropriate items kids occasionally flush, (2) easy to clean — kids miss; bowls and seats need frequent wipes, (3) appropriately sized — comfort-height works for adults but is tough for kids under 6, (4) cost-conscious — multiple bathrooms × premium toilets adds up fast.
For the main household bathroom (used by adults and older kids), comfort-height elongated is the right choice. Top picks: American Standard Cadet 3 FloWise ($269–$359) or Champion 4 ($329–$429) — both have high MaP flush scores that handle high-volume use, and parts availability across all US retailers.
For a dedicated kids' bathroom (kids under 8 as primary users), standard-height toilets are more appropriate — kids' feet reach the floor for stability. Kohler Wellworth Standard Height Two-Piece Round ($179–$229), TOTO Drake Standard Height ($329–$399). Plan to upgrade to comfort-height when kids transition out of the kids' bathroom around age 8–10.
For high-clog families (kids who flush inappropriate items), pressure-assisted toilets (American Standard Champion 4 Pressure-Assisted, $479–$579) handle the highest-volume waste loads. Worth the upgrade for high-traffic kids' bathrooms.
Replacement parts availability matters more in family households than elsewhere — Kohler and American Standard both have universal US availability through Home Depot/Lowe's. TOTO has strong premium availability in major metros but harder to source in small towns. Niagara, Saniflo, and value-tier brands often require manufacturer-direct ordering for replacement parts.