@localnotail what you remember is what Education was when our economy was strong. Tony Blair caught a ride on a period of economic growth.
Have a look at the graphs I've attached on Education spending and GDP over time.
Education spending per child did rise hugely between 2003 and 2010 (Labour). GDP rose steeply too... until the 2008 crash.
Education spending actually barely dipped between 2010 and 2020 (Conservative). I'd suggest that a slight drop was fairly reasonable given the GDP drop after the 2008 crash. GDP only got back to 2008 level in 2013 - and Education spending growth had continued rising under Labour until 2010, so there was some catching up for GDP to do.
Education spending has at no point gone below the 2003 level in real terms, ie even allowing for inflation. It has easily held its own against our GDP.
There was actually another big spending boost the last 3 years (Conservative) despite GDP falling through the floor.
Education spending per child is 20% higher now than it was in 2003 in real terms.
GDP has only gone up 10% in real terms.
Maybe student needs have changed - or certainly how we cater for them. Kids seem less ready for school.
But in the end, if we want more money for education, our economy needs to grow. It really is that simple.
How do you think Labour are doing at that?