Level means what type of entry requirements a certain course or programme requires.

• preparatory - you do not need any previous higher education studies
• bachelor's (first cycle) - you usually don't need previous higher education studies. Read the course description under 'More information' in the results list for each course to find out what's required
• master's (second cycle) - always requires previous higher education studies

If you study 100%, this means that your study pace is full-time, which is 30 credits per semester.

If you study less than 100%, this means that your study pace is part-time which is less than 30 credits per term.

You can choose what percentage of full-time (30 credits) you which to study. 

You should select 'All' if you don't mind whether the course is full-time or part-time.