My personal opinion on students going solo
Solo is a subjective thing, it means they can fly aircraft under very controlled conditions for a circuit and hopefully get back in one piece. They usually do half a dozen circuits with an instructor, and they are in the groove.
As you all know I hope, it’s not something that means the student is safe in varied conditions that change. Solo means that got the monkey off the back, and now you can really start teaching.
Also what aircraft are you flying, you can launch a student in a drifter for example all things being equal faster, then you can in the hot metal beasties with all the switches and flaps, why because drifters etc are just easier to fly and things do happen a lot slower.
Now you have the student, and the students come in a wide range of varieties.
Some are apprehensive initially or did they just come from a top gun school after watching a movie.
I know of one student that had a fear of flying and can to learn to fly to overcome it, from memory it only took him an extra three or four hours extra than usual to go solo. Then you have what I call the uncoordinated types, there are always a handful.
Then you have consistency of training, do they fly once or twice a week today fly once or twice a month.
Weather, did you get a good run of weather or not although a good bit of crosswind or bumpy weather made them much better on the controls in circuit training.
Then you have instructors, you have good ones you have bad ones, just the fact.
My personal opinion is that I prefer a student to take slightly longer just because it’s given him more time wiggling the stick gaining muscle memory and just have a little bit of edge of experience if you could call it that.
In the decision to send a student solo from my point of view, was not that he had six perfect landings beforehand, but for example on finals if he was doing well I would kick in a bit of rudder or push the stick over on short final to watch him recover and unsettled aircraft and he or she still put had it down well.