The paper deals about preliminary results from an on-going project: “From unskilled worker to skilled worker in record time”. The aim of the project is to qualify unskilled workers for skilled positions in record time by drafting up a plan for the training based on assessment of the students’ (the unskilled workers’) prior learning, i.e. their work experiences and informal learning. In the paper we will describe and point to some challenges in relation to assessing the students’ prior learning. The assessment is accomplished by teachers and supervisors in VET colleges. The assessment includes 1. Observations and or with the students about the students’ workplace based experiences and learning and 2. Drafting up an individual study plan based on the individual student’s prior learning.