"It's unfortunate we haven't got our settlements in time for Christmas," Ms Whatley said, adding she expected further details in the new year.
The GMB union rep was one of many workers gathering in front of Birmingham's Council House in Victoria Square on Tuesday to celebrate the settlement.
She was also one of hundreds of school support staff to walk out in May in protest over the equal pay issues, and said she hoped her settlement would mean she could reduce her hours at a second job as a waitress.
"We've had to come out of work, the kids have missed education because of it," she said.
"Hopefully [the settlement] will send a message to the next generation of children that I work with that women need to be able to stand up for their rights.
"I feel that it's really unfair that we've had to do this for so long."
Another claimant, Claire Shuttleworth, said: "It shouldn't have happened and we need to make sure now that it never happens again.
"We need to make sure that the young girls that we teach can go into jobs in the future knowing that they're going to be paid fairly along with their male colleagues."
Ms Shuttleworth, who has worked as a teaching assistant for 24 years, added she was thrilled an agreement had finally been reached.