One thing I haven’t seen mentioned is key phrases from Board of Review training documents. This is from 2006.
The Tenderfoot through First Class boards of review are ways of getting to know the Scout better, reviewing his progress in achievements, and discussing how he felt about the various steps he has taken on the Scouting trail, including his individual achievements. This should not be a time of retesting, but rather a time to reflect on the skills learned and how the Scout has absorbed the ideals of Scouting.
For Star and Life:
at these ages, the Scout will be able to change fundamentally much quicker than you would imagine and the board of review may be an occasion for you to reevaluate the candidate.
This shows the expectations of the BOR can change based on age. One size does not fit all.
Look at the pedagogical goal of First Class. Scout Spirit should show progression, not perfection.
I would say in this case, advancement is fair and deserved. But you set the standard that much more is expected to earn Star. Since Star requires waiting 4 months, that give you time to see growth, or not.
It’s not uncommon for an entire patrol to earn First Class all together in the first year and Star its scattered out across 1-2 years time, with younger Scouts earning before older Scouts. That comes from the differences in interest, ability and maturity level.
If you would ever hold a Scout to see growth, it’s the Star and Life ranks. If you don’t get their attention to change there you’ll never get it for Eagle, and you’ll have a hard time explaining why you accepted bad behavior for so many years.