Only one of the secondary schools in Pendle showed an improvement in the percentage of pupils achieving five or more GCSE passes at A* to C grades including English and maths in 2014.
League tables published this morning show that Pendle Vale College, Nelson, saw 49% of pupils reach the benchmark standard, compared to 44% in 2013.
Elsewhere in Pendle, the numbers of pupils who attained five or more top grades fell, with Fisher-More High School, Colne, seeing a reduction of 24%, from 64 to 40.
Other school statistics were Park High, Colne (down from 60% to 51%), Marsden Heights Community College, Nelson (44% to 39%), West Craven High School (59% to 44%) and Ghausia Girls High School, Nelson (40% to 6%).
Colne Primet Academy saw a rate of 35% of pupils reach the required level in its first year since changing to academy status from the former Colne Primet High School.
All of Pendle’s schools fell well below the Lancashire county average for passes, which was 56.8%.