A former administrator and a vendor for the Dallas Independent School District in 2008 were found guilty in the bribery investigation.
Ruben Bohuchot and Frankie Logyang Wong were convicted on 23 counts, including bribery, conspiracy to commit bribery and conspiracy to commit money laundering. Wong was sentenced to 10 years in prison. Bohuchot received an 11-year prison term.
The New Orleans-based federal court denied the appeals Tuesday.
Wong owned Micro Systems Engineering Inc., which is a former business partner of Hewlett-Packard Co. HP this week agreed to pay $16.25 million to settle allegations that it showered Texas school officials with gifts to win contracts.