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\usepackage{amsmath,amssymb,makeidx}
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\usepackage{fancyhdr}
\usepackage{tabularx}

\pagestyle{fancy}
\usepackage{pstricks}
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%\usepackage{tikz,tkz-tab}    % faire de beaux tableaux de variations
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\fancyhead[L]{\textsc{Mathématiques} Lycée Schuman-Perret}
\fancyhead[R]{2019-2020}
\fancyfoot[R]{\tiny Stéphane Le Méteil}


\begin{document}
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\bigskip

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