Pearse has 20 years’ experience teaching Irish. He completed his primary degree in NUI Galway, where he was awarded a degree in Engineering with Irish. He completed his teaching diploma along with further Irish studies in UCD. Pearse was awarded a 1.1 Master’s Degree (MTeach), which included a thesis on how to promote oral Irish skills within the Junior Cycle Programme. 
He has prepared students for exams at both second and third level and has worked in summer colleges in Corcha Dhuibhne, Conamara and the Aran Islands. Pearse has also worked with the state examinations commission and as an academic supervisor for PME students in UDC on the teacher training programme within the university.