Women teachers are missing out on pay and professional training in work, the UK's largest teaching union said.
Many teachers gathering at the NASUWT's women's consultation conference in Birmingham raised concerns about what they called "the systemic unfairness" in how some schools had managed pay and performance.
“The potential for discrimination and unfairness highlighted by our women members today is deeply worrying," Chris Keates, General Secretary of the NASUWT said.
The union said almost half of the attending teachers "had experienced discrimination in relation to pay or pay progression this year".
Some teachers also reported being hindered over access to professional development and training at work.
Governors at a school placed in special measures following allegations of a hard-line Muslim takeover plot to take over governing boards have resigned in protest, calling the Ofsted report "flawed".
Board members at Saltley School said they "have been left with little faith or trust" in the inspection process or Birmingham City Council in the fall-out over the "Trojan Horse" row.
The out-going governors criticised the Ofsted inspectors for not clearly concluding whether there was an "Islamic agenda" or not in the school's classrooms.
In their statement, entitled their "final response" on the matter, the governors said: "It is the Governors' view that the inspection and the report are flawed."
Saltley School, which has about 950 pupils, was one of five schools place in special measures following Ofsted inspections.
Governors at schools placed in special measures are to be interviewed as part of the council's investigation.Read the full story ›
Poverty is being used as an excuse for failure by white working-class families, Ofsted chief Sir Michael Wilshaw argued in an interview to The Times (£).
Sir Wilshaw was commenting on a government report into extending school hours for poorer children, where extended school hours would give children somewhere to do their homework.
He said: "It's not about income or poverty. Where families believe in education they do well. If they love their children they should support them in schools."
The performance of every child "will be captured" under a new system being brought in by the Government, meaning youngsters who are struggling will have any academic progress they make recorded, according to an MP.
Chair of the education select committee Graham Stuart told Good Morning Britain the Government was adopting a number of measures designed to help pupils from poorer backgrounds.
"What we know is that children from poor homes are particularly sensitive to the quality of teaching they get, perhaps because they don't have the resilience of their better off peers for parenting or other reasons."
The right school can make "a significant difference" in turning the education of poor youngsters, the head of a cross-party committee of MPs has said.
Education select committee chairman Graham Stuart said:
We don't know how much of the under-performance is due to poor attitudes to school, a lack of work ethic or weak parenting.
What is certain is that great schools make a significant difference in turning poor children's education around.
The problem of poor, white British under-attainment is real and the gap between those children and their better-off class mates starts in their earliest school years and then widens as they get older.
However, we also know that the effect of attending an outstanding school is transformational for poor children because it doubles their chance of success at GCSE.
Just under a third (32%) of white British children from poor backgrounds got at least five C grades at GCSE, including English and maths last year, according to a report.
- However, 61.5% of poor children from an Indian background walked away with the same GCSE results.
- While 76.8% of poor children from a Chinese background achieved the same marks.
- The gap in results between poor white children and their richer classmates has hardly changed in the last seven years, the report said.
- While the attainment of poor children from other ethnic backgrounds is improving faster than that of poor white children.
Extended school days could help to boost poorer pupils' grades because it would give them somewhere to do their homework, a cross-party group of MPs has said.
The Commons Education Select Committee wants new guidance for teachers on how best to extend the school day so youngsters from deprived families can have a better chance of succeeding at school.
The proposal was put forward in a report on the challenges facing white working class children at school, which found they had fewer evenings in which to do homework and missed more days in class than any other ethnic groups.
In the past children who left school without decent exam results would have spent their working life doing routine manual work in factories, now they are more likely to end up as "Neet" (not in education, employment or training), it added.
The report said: "Poor white children in rural and coastal areas have been 'unseen' for too long; unless such steps are taken, the potential of white working-class children will be left unlocked, and the effects of the current trend will continue to be felt beyond the school gates."
Education Secretary Michael Gove is attempting to use a campaign to fight school illiteracy "to distract from his failure to respond to warnings," on risks of extremism in Birmingham schools - Labour’s Shadow Education Secretary has said.
Tristram Hunt MP was referring to a report that two Birmingham schools run by the same educational trust were criticised by Ofsted, for apparently failing to protect pupils from the risks of extremism.
Education secretary Michael Gove has told the Policy Exchange Think Tank that he wants competitiveness within schools between pupils, using a "rank order system."
Telling the Policy Exchange, he believes that creating a rank order for students to follow - pupils will strive to improve.
Gove said the model is "to replace the harmful competitiveness of street culture, the contest over who is coolest, who's trainers are smartest, who's attitude is the hardest, who's backchat is the most fly - with the competitiveness of academic culture."