Do you mean Child Benefit?
Realy it depends if the course is classed as fulltime or not - some courses for 16 hours a week are classed as fulltime as the home study is meant to take up quite a bit of time too.....if it is classed as a fulltime course and the son is under 19, it would be worth applying to his local education authority for an Educational Maintenance Allowance (EMA) - if they do these in their local council. They usually amount to 30 quid a week providing the student attends every lesson.....