One-in-10 pupils in some areas were given places parents refused to name on application forms amid unprecedented competition this year.
In at least 32 areas, more children were forced to accept unwanted secondary schools for this September compared to 2008.
Across London, almost 4,700 pupils failed to get into any favoured school.
Critics said the disclosure made a mockery of Government claims of school choice in the state education system.
Samantha Jellett, 34, a freelance music teacher from Knebworth, Hertfordshire, failed to win any of her preferred choices for daughter Lydia, 10.
The child was rejected from the sought-after Barnwell School and has been told to attend the Thomas Alleyne Comprehensive in Stevenage, four miles away.
She described the admissions process as "haphazard and unjust".
"They have removed every element of choice we had and placed our children at a school we know little about and have never seen," she said. "Parents should not be put in this situation."
It came as research showed the lengths parents are prepared to go to ensure pupils get into best schools.
The Good Schools Guide used census data to map schools and the postcodes of pupils admitted over the last few years.
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