Swimming Pools serving Lehigh Valley. Rated 4.9/5 (413 reviews). From their website: Swimming Lessons & Swim School in Center Valley, PA | Swim-in Zone Pricing: 30-minute group classes are $32 per week. Example: 4 weeks x $32 = $128 charged on the 1st. 5 weeks of classes x $32 = $160. Easy auto-payments are required. There is a once-yearly facility fee of $30. Swim-in Zone is happy to offer a 20% discount for our military families.