A trip 20 years ago to Nyirripi School in the NT changed Narrabundah College teacher Charlie Freer's life. Now the partnership he set up is bearing fruit as the NT school's indigenous students paid the college a visit on Wednesday.

"We’ve set up a sister school, and people often have a sister school overseas but we thought well why not pick a remote Australian indigenous school," Mr Freer said.

His students have been moved by the exchange which started when year 11 and 12 students visited Nyirripi in central Australia in April last year.

Year 12 student Noemie Huttner-Koros said the visit to Nyirripi "was amazing" and "one of the greatest things" she had ever done.

"They took us to sacred sites, they took us to the world's oldest continuous ochre mine and taught us Warlpiri. I'm now thinking of taking a gap year and going back to Nyirripi," Ms Huttner-Koros said.

Another student who was in year 12 last year is studying medicine and hoping her work will take her up there when she graduates, according to Narrabundah College principal Kerrie Grundy.

"The exchange has been truly life changing for the students," Ms Grundy said.

Ms Grundy said Australians needed more knowledge about indigenous cultures and she was happy her students were getting the opportunity to learn and spread their knowledge in the community.

Mr Freer agreed, saying it was a rare opportunity to get to know "indigenous students who they don’t often get the opportunity to meet".

With Prime Minister Tony Abbott overseas, Nyirripi student Rhys Robertson, 10, declared he wanted to take his place and be the next prime minister on a visit to Parliament House on Tuesday.

Others were more taken by their first visit to the snow on Monday, and were happy to run amok in Canberra's museums. Student Sharoline Frank was so enchanted with the free-fall slide at Questacon she went down it four times.