Club 0-5 limited, which is based at Halesfield 20, was given the grade in all areas inspected following a visit by the education watchdog in November.
A recently-published report says the manager provides staff with regular confidential meetings, giving them the opportunity to discuss their training needs and any concerns.
It says staff have also developed strong partnership with other local schools.
The report continued: “Outcomes for children are good.
“Staff demonstrate high levels of warmth and care towards the children.”