This comes after the college took the decision to scrap all four A-level evening courses at the end of May.
A-levels classes in environmental science, Italian, law and psychology are no longer offered in the evenings.
Wendy Turner has just comp
leted a GCSE course in psychology and was hoping to eventually progress on to a degree.
She is angry the college is no longer offering the A level course she was planning to complete.
"Here we are trying to support our local facilities and I feel the college is being ageist," said Wendy.
"We were offered an advanced course in psychology but without a qualification at the end, which is no good because you can't do anything without qualifications these days.
"We were also advised that we could study during the daytime with the younger students, which is not practical because most of us work during the day.
"It may well be that there is the option of a course at the Lewes campus, but the time and travel costs will prove prohibitive."
Wendy and her psychology classmates wrote a letter to Sussex Downs College highlighting their disappointment.
A spokesperson from the college said, "The college is committed to meeting the learning needs of all its students and is therefore happy to offer an advice and guidance session for any students on the psychology GCSE once they have received their GCSE results.
"Students will be advised of an appropriate progression route to ensure that they can continue their learning.
"Adults will still be able to access the A-level provision at Park College, or if their aim is to progress into higher education, then both the adult college in Eastbourne and Lewes run Access courses and university level courses for adult learners.
"If there are a sufficient number of learners from the current GCSE group who wish to continue on to the psychology AS then the college may consider offering this course next year."
Wendy says the offer of a one-year AS level course is not good enough beacuse she wants to complete a full A-level.
She also feels the Access course is not the right route for her because it does not specialise in psychology.
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