By Mike DeNardo

PHILADELPHIA (CBS) — The union representing Philadelphia’s public school teachers is asking the state Supreme Court to toss out the school district’s petition to change seniority rules.

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The school district last week asked the Pennsylvania Supreme Court to affirm its right to sidestep seniority rules (see related story).

Now, the Philadelphia Federation of Teachers has filed a response, saying the district chose to negotiate four teacher contracts over the last 13 years rather than using its power under Act 46 — the state takeover law — to impose terms.

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The union says the district is asking for relief from agreements that it negotiated — and that any disputes should go through the standard labor grievance process.

In a statement, union president Jerry Jordan asked the high court to dismiss the district’s petition with “deliberate speed.”

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