The proportion of university students achieving grades above 2:2 level has increased significantly in recent years, but researchers have claimed this is not a result of grade inflation, as previously suspected.

According to a study conducted by Lancaster University, people in teaching jobs across the board can take responsibility for the rise, which it argues reflects "better prepared" students.

Figures published last week revealed just one-quarter of students were awarded a 2:2 degree in 2012-13.

Researchers insist the improvements reflect the rising quality of the university intake, which is reflected in A-level and GCSE grades across the UK.

The study was designed by economists from Lancaster University Management School and assessed degree grades from British universities between 2005 and 2012.

It hoped to determine whether the assessments could be "considered as realistic, or involve any level of 'dishonesty'". 

Kwok Tong Soo, part of the research team, said there was no evidence the universities contributed to grade inflation and stated the higher grades are a reasonable expectation considering the improvements in A-level and GCSE results.

He added the average improvement in quality of the intake is equivalent to one A-level grade per student. 

According to the report, the only evidence of any "leniency" was discovered among the top universities, which researchers estimate are around eight per cent more likely to award higher degrees.

The study stated this is a "highly emotive subject", but rejected all suggestions universities have made it easier for students to achieve the very top grades.

However, professor Alan Smithers - director of the Centre for Education and Employment Research - believes the rise is a result of the fact universities are under greater pressure to improve their positions in league tables, leading to them inflating grades, even if this is unintentional.

The expert also suggested students may be a factor, with concerns regarding the condition of the UK employment market driving them to achieve higher grades.

What do you think is the reason behind higher university grades? Is it a reflection of better teaching across the UK? Let us know your views.