West Suffolk College was the top provider in the country for adults taking GCSE English last year.
The college ranked top of more than 170 further education provider colleges nationally with nearly 70 per-cent of students getting grades A* to C.
Adult achievement rates for GCSE maths was also well above the national average - making it the fourth most successful college for that subject.
The college said many adult learners found returning to the classroom an anxious experience, so aimed to make the transition as smooth as possible.
The college has organised a series of free taster sessions throughout this week in Thetford, with sessions including yoga, photography, floristry, Spanish and using Microsoft Excel.