To be fair, dh gets that line from Bournville station and I am not aware of trains stopping/line being closed recently.
It is an incredibly busy line with trains coming every 10 minutes at peak times so I cannot see it just stopping for long.
He also sees quite a few BV boys getting on at Bournville and our friend's son in Y8 gets on too so I think your son would have plenty of company.
As for the commute, it sounds better than many commutes that I know children make to GS, because it is a straight line journey with no changes, which is a huge advantage and means no standing around in snow/rain/hail etc for the connecting bus as many others do. The train also provides a nice opportunity to get homework done
. If I had to choose between a bus or train commute for myself or my children, I would definitely choose the train.
The walk at both ends is minimal - I know that at the BV end, the school is practically opposite the train station.
The other advantage is that, getting on at Bromsgrove he'll probably get a seat which those who get on from Northfield onwards may not always get