For frequent pediatric chronic conditions, especially less common chronic conditions patient education programs are missing. A recently developed modular patient education approach (ModuS) combines disease-specific modules with generic psychosocial topics. ModuS was associated with increased disease-specific knowledge and improvements in families' well-being in children with asthma. In this study we tested if new developed ModuS programs for seven, mostly less common, chronic conditions show comparable program-associated effects. ModuS education programs were offered to the affected child and its parents. Disease-specific knowledge, children's health-related quality of life, life satisfaction and condition-specific burden were measured before, directly following and 6 weeks after participation in the program. The results were compared with families who received a ModuS asthma program. One hundred and sixty-eight children participated. Families were highly satisfied with the programs. Program participation was associated with increased families' knowledge, children`s self-reported health-related quality of life and reduced condition-specific burden. The results were comparable with the results of 230 families who participated in a ModuS asthma program. The ModuS approach allowed the development of patient education programs for children with a variety of chronic conditions. Therefore, ModuS closed an important healthcare gap. [Co-written with the ModuS Study Group.]