IS 15883 is the Indian standard for playground equipment safety, and read cold it is a wall of clauses. Translated into what you actually have to build, it comes down to three ideas: no gaps that trap, no falls that injure, and no edges that cut.
Entrapment is the first. The standard sets specific gap ranges that must be avoided because they can catch a head, a finger or a limb — which is why compliant equipment has either gaps below the finger range or openings above the head range, and nothing in between. Fall protection is the second: any raised platform needs guardrails at a defined height and an impact-absorbing surface sized to the fall height beneath it.
The third is simply finish — rounded edges, capped bolt ends, no protrusions a child can snag on. None of this is exotic. It is a checklist, and the equipment either passes it or it does not. We build to the checklist and document each point, so the school's safety audit is a formality rather than a scramble.