Final answer:
True. A core set of aquatic skills are essential for proficiency in swimming. These include breathing, buoyancy, and stroke techniques which are taught in swim curriculums. For competitive swimmers, balance and proper start-offs are also crucial for successful racing.
Step-by-step explanation:
The Swim School curriculum is indeed built around the concept that there is a shared "core" of aquatic skills that every person needs to perform to be proficient in the water, so the statement would be true. These core skills include, but are not limited to, breathing techniques, buoyancy control, stroke development, and safety knowledge. These are essential to help individuals navigate in the water with confidence and efficiency.
Furthermore, for competitive swimmers and athletes, balance and proper starting postures are critical. These factors contribute greatly to a successful performance during a race. A powerful and balanced start-off can give swimmers an advantage by propelling them forward with greater speed and stability.