Teachers are under increasing pressure to be "counsellors, researchers or data analysts" as well as educators, a new global report has found, amid concerns that parents are expecting schools to pick up their "slack".

"Pressures on teachers are well documented and appear to be increasing, in part owing to new expectations," according to the UN Educational, Scientific and Cultural Organisation's latest global education monitoring report, released on Tuesday.

The report also found that despite increasing expectations for teachers, teaching continues to be undervalued in society. Credit:Tamara Voninski

"Beyond instruction and facilitating learning, teachers are asked to be counsellors, researchers or data analysts."

President of the NSW Secondary Principals' Council Chris Presland said that expectations being placed on Australian teachers are "now massive".