A poll of 843 teachers has also found that more than half feel that previous experience of business is important to delivering careers advice.
The YouGov study, commissioned by Pearson College, comes at a time when careers services in schools are struggling.
The government handed the responsibility for delivering careers advice to schools in September 2012 when it cut the funding behind the national network of Connexions centres. None of the estimated £200 million cost of providing services was given to schools.
The poll also found that 81 per cent of the teachers feel school visits by business people are an important part of business engagement with schools, while 85 per cent still value the opportunity for student work placements.
The findings come after a number of reports and surveys over the past year which have highlighted problems with careers provision under the new system.
Early last year, a damning report from MPs on the Education Select Committee called on ministers to take “urgent action” to stop the continuing deterioration of careers guidance. The committee’s investigation concluded that the “quality and quantity of guidance for young people is deteriorating just when it is most needed”.
Meanwhile, in September, a survey report by Ofsted found that only one in five schools – 12 of the 60 visited for the study – are effective in ensuring students in years 9, 10 and 11 get a good level of information and advice.
And last month, a poll by CBI and Barclays revealed that 93 per cent of young people felt they were not provided with the required information to make informed choices on their future career.
Roxanne Stockwell, principal and managing director of Pearson College, said: “It is worrying that so many teachers do not feel adequately supported to deliver appropriate careers advice at a time when so many young people are struggling, out of employment and training.
“The only way we can tackle the current careers advice crisis is for business and schools to work together to deliver guidance that gives students the information they need to make the right choices for their careers.”