My thesis statement could have been,

The lack of well trained human resource, outdated and incoherent government policies, absense of a suitable schooling system and the failure of government to dedicate adequate monetary resources are the prime factors that consitute the biggest hurdles in implementing english as the medium of instructions.

You should and must include the ramsifications of the 18th amendment that declared education as a provincial subject. The incoherence in the policies of the individual provinces is the biggest problem in acquiring results from english medium schooling and this point bears extreme importance in your argumentation.

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