This study examined the impact of portfolio assessment on evaluating the English language skills of pupils with hearing impairment in Fako Division, Cameroon. Portfolio assessment, as an informal and learner-centred approach, was explored within the framework of inclusive education, where traditional assessment methods often fail to adequately reflect the abilities of learners with hearing loss. The research utilised a quasi-experimental design involving pupils with hearing impairment in selected inclusive primary schools. Data were gathered through English language tests, classroom observations, and interviews with parents, teachers, head teachers, and the divisional delegate. Quantitative data were analysed using descriptive statistics, t-tests, and regression analysis, while qualitative data underwent thematic analysis. The results indicated that pupils subjected to portfolio assessment performed significantly better in English language skills than those assessed through conventional methods. Statistical analysis (SPSS t-tests and regression) showed that pupils assessed via portfolios scored notably higher on post-tests (portfolio group mean=12.78 versus control=11.14; t(38)=2.919, p<.05). Regression analysis demonstrated that portfolio use was a strong predictor of language improvement (β=0.336, p<.001). Classroom observations and interview findings further revealed that portfolio assessment encouraged ongoing learning, increased learner engagement, self-reflection, and heightened teacher awareness of individual progress. The study concludes that portfolio assessment is an effective method for evaluating the English language skills of pupils with hearing impairment and recommends its systematic adoption within inclusive classroom practice.