What are some great advertising/marketing techniques for an English school?

[Adam S]

It depends on your budget. If it's limited, I believe launching incentified referral program would be your best bet. Your existing students, staff members, their family and friends, everybody can become your referral parters and get paid for referrals. The trick is to streamline and automate the program. But I think this should help: http://salesannual.com. The company will design, automate and market your referral program via their affiliate network in 2 weeks.
Look at their white papers: "The secrets of succeeding with partner campaign marketing management " and "How how to skyrocket your sales in the current economy "