Diploma studying Degree pay increase?

From what I understand, some centres allow you to become a director while you are studying your bachelor degree however I don't think you will be paid the degree wage until you complete your full qualification. The only way of a pay increase until you become a director is if you get an authorized supervisor position or if you can negotiate your wages... I also know what directors get paid and it's so much more than necessary I feel... I understand the importance and responsibility of running a centre however I believe room leaders go above and beyond than some directors and we get nothing to show for it! The only way to make a decent earning now in early childhood it seems is to become a director or work as a casual...

Here is a link to the pay scale and classification structure of the modern award wages:

Link to childcare award - wages

,
L.A