Isla Norrington

Career: 44.18 percentile of ICSA crews (limited evidence)

▲ boats did better with this crew than with the skipper's usual crews▼ worseArrow length = size of the push, in rating points

Season	Team	Rating	Range	League percentile	Team percentile	On team	Races	Team page
Spring 2026	Severn School	2.69		94.40	42.31	8 of 13	12	Team page

Regatta	Role	Div	Races	Avg	Rating
Spring 2026 Team page Season
MDISA WRSC Spring 2026 Fleet Tier 2	Crew	B	8	1.4	-0.19
MDISA Championship Tier 2	Crew	A	4	1.0	+0.19

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

How do skipper ratings work?A log-strength fitted to every race at once, smoothed week to week.
What a rating point is worthA one-point edge is a 73% chance to beat another boat in a race; two points is 88%.
How does a crew rating work?A crew rating is small and uncertain; a worked example on one roster.