Family Functioning and Academic Achievement Among Secondary School Students in Gatundu North Sub-County, Kiambu County, Kenya

Academic achievement among secondary school students in sub-Saharan Africa continues to reflect alarming deficiencies, with Kenya being no exception. Persistent low academic achievement in the Kenya Certificate of Secondary Education (KCSE) in Gatundu North Sub-County, Kiambu County, prompts inquiry into the proximal ecological factors that may account for this trend. This study examined the relationship between family functioning and academic achievement among Form Three students in public secondary schools in Gatundu North Sub-County. It further explored gender differences in family functioning as a supplementary analysis. Anchored in Bronfenbrenner's (1979) Ecological Systems Theory, the study adopted a cross-sectional correlational design. A sample of 372 students (175 males, 197 females; M age = 16.72, SD = 1.68) was drawn from six public secondary schools using mixed sampling techniques. Purposive sampling was used to identify the ideal population based on the study problem. Proportionate stratified sampling was used to equally group the sample by gender and school categories, whereas simple random sampling was used to arrive at the final sample. The Family Assessment Device (FAD; Epstein et al., 1983) measured family functioning across seven dimensions, while academic achievement was operationalised using transformed Term 1 examination scores. Data was analysed using descriptive statistics and Pearson product-moment correlation. Findings revealed that respondents reported above-average family functioning (M = 2.42, SD = 0.21), with communication and role assignment recording the highest subscale means. Academic achievement was generally below average (M = 42.81%, equivalent to a D+ grade). A weak but statistically significant positive relationship was found between family functioning and academic achievement, r(370) = .27, p < .001. Supplementary analyses revealed significant gender differences in family functioning, t(370) = −9.01, p < .001, with females reporting stronger affective and relational functioning. These findings underscore the role of family-level processes in shaping adolescent academic outcomes and have implications for school-family engagement initiatives in Kenyan secondary education.