Working as a teacher can be a great experience, but with most teaching positions you’ll find that you have a fair amount of free time over holiday periods and the summer. It is understandable that many teachers decide not to work over this period, after all teaching can be a stressful job, but this free time also means that you have a lot of untapped earning potential. Of the things which you can do to supplement you income over this period, the one which really makes the most sense is to work as a tutor.
Working as a tutor means that you’re taking advantage of acquired skills which are actually very valuable. You’ll find that you could be able to make as much as four or five times your typical hourly rate from working in a school, although you will need to build your reputation before you can make this.