How long should a piano lesson last?

[FiveHoursSleep]

I have three daughters all learning the piano. The youngest is 7 and is preparing for Grade 1, the second is 10 and preparing for Grade 3 and the eldest is almost 12 and has just sat Grade 5.
The oldest two have been having hour long lessons for ages now and the youngest has been doing 3/4 of an hour.
For various reasons we are looking for new teachers for the eldest two but most of the teachers we are looking at are offering 30 min lessons for my eldest two.
While our present teacher is telling us that our 7 year old needs to have hour long lessons in the new year.
Those of you whose children learn the piano, what grade are they and how long are their lessons?

eeeek! those are long lessons - maybe grade 5+ justifies a longer lesson but below that half an hour is standard.

Half hour is enough for grade 5 and under, 45 minutes for grade 6, 1 hour for grade 7,8 is enough. It's not the longer the merrier.

Depends a bit on how much practice they do and whether you are on time for lessons, but it would be perfectly possible to get up to Grade 8 on half hour lessons if you worked well on your own (I did).

I only really give very keen adults 1 hour lessons tbh.

Half hour lessons is most usual. Young children
Lose Concentration else

I moved up to an hour after Grade 5.

My youngest students (4-6 yr olds) get 20 minutes, up to grade 3 30 minutes, grades 4-6 45 minutes and grades 7-8 and adult students 1 hour. An hour seems like a long time for a 7 year old grade 1 student, unless they are particularly keen or the teacher does a lot of aural, theory and work away from the piano (e.g. general musicianship and singing).

DD1 has half hour lessons for her second third and fourth studies, she is taking grade 8 next term in the second and third and has just taken grade 5 in the fourth. She is post grade 8 in her first study and has hour long lessons, plus an additional monthly lesson from an international conservatoire teacher. She will never be able to have longer than half hour lessons for her second or fourth studies since she learns them in school and that's all there is - half hour lessons.

Thanks for all your replies. The old teacher dragging out lessons as long as 90 minutes is one of the reasons my older DDs want to move teachers.

This is a schedule for someone who went off to study music professionally. I started late playing instruments, and the schedule is rather light compared to non singers.

In Y6 I did per week:
30 mins recorder in a group
1 hr singing in school church choir (RSCM choir)

In Y7 I did:
1/2 hour piano (from scratch, I had been trying to teach myself before then but my parents didn't have a piano and I didn't have a teacher so it did not go well)
1 hour junior choir
40 mins class singing
About 1 hour self-taught theory, sometimes more

By Y9 I was doing:
1/2 hour piano
1/2 hour violin
1/2 hour guitar (someone taught me for free as I was curious about it)
2 hours chapel choir (RSCM choir)
1 hour senior choir
Music theory in class

By Y11 I was doing:
1/2 hour piano
1/2 hour violin
1/2 hour singing
2 hours chapel choir
1 hour senior choir
O Level music

In 6th form I did:

1 hour singing
1/2 hour piano
3 hours rehearsal with semi professional choir, with gigs about once a month, sometimes paid.
Music festivals.
3 hours roughly once a month with a really good youth orchestra (under sufferance as my violin playing ain't great, but I was dead keen and obv musical, and they felt sorry for me)
A Level music

That got me into music college.

At music college we had:

Hour a week on first study - solo
Half an hour a week on second study - solo
Hour opera class - group of about 12-15
Hour recital class - group of about 12-15
2 hours music theatre class - group of about 12-15
Hour keyboard harmony - group of 4
Hour harmony and counterpoint - group of 4
Hour music history lecture - whole year group on degree course
Hour analysis lecture - whole year group on degree course
2 hours choir - all singers in college
2 hours drama - all singers in year group

Plus 2-4 hours a day routine practice for both studies, rehearsals for things, and little chamber groups if we fancied it. And a fair bit of paid work - either arranging things, or professional chorister gigs, or solo gigs. Plus teaching about 2-4 hours a week.

Half an hour up to grade 5. Sounds like the teacher is fleecing you. My 8yo is g2 and g3 on his instruments and he does half an hour individual lessons and two hours of orchestra/singing&theory every week. Group lessons are 1 hour.

Dd1 has done grade 5, just turned age 13.
Her teacher starts on 20 minutes, and moves up to 30 minutes when she thinks they're ready. Dd1 moved up fairly quickly, but she said sometimes she has ones of 8/9 that don't get any more out of 30 minutes because they lose concentration. Occasionally she has done 2x 15 minutes rather than 1x 30 minutes for children who struggle.

Dd1 is still doing 30 minutes, I think her teacher would like her to move to 45 minutes after grade 6, and would expect an hour when working towards grade 8 (or beyond).

DD 16 is doing grade 6 in March. Shes only ever had 30 main lessons since she was 7. Same for saxophone