\documentstyle{article}
\pagestyle{empty}
\setlength{\oddsidemargin}{-1cm}
\setlength{\evensidemargin}{-1cm}
\addtolength\textwidth{1cm}
\addtolength\topmargin{-1.5cm}
\addtolength\textheight{6cm}
\begin{document}


\begin{table*}
\begin{center}
{\LARGE Assessment Scale for Summaries}\\
\end{center}

\begin{center}
\begin{tabular}{|c|r|p{13cm}|}
\hline
{\bf Content}&20-18& {\bf Excellent to very good:} Message of text fully 
present, all relevant information included. \\
\hline
& 17-14&{\bf Good to Average:} Main facts clearly stated, supporting details 
slightly confusing, some irrelevant information included. \\
\hline
&13-10& {\bf Fair to Poor:} Main facts not complete, many details not relevant 
to main line of argument, message of text only partly intelligible.\\
\hline
&9-6&{\bf Very Poor:} Message of text unintelligible.\\
\hline
\hline
{\bf Organization}& 20-18& {\bf Excellent to Very Good:} Effective choice of the
order of presentation, independent.\\
\hline
& 17-14&{\bf Good to Average:} Clear sequencing of main information, coherent, 
some mistakes in the use of connectives.\\
\hline
& 13-10&{\bf Fair to Poor:} Main facts only partly successfully linked, choppy, 
several errors in the choice of connectives, not coherent.\\
\hline
& 9-6& {\bf Very Poor:} Non-fluent, facts often confused or disconnected, lacks 
logical sequencing of connectives.\\
\hline
\hline
{\bf Vocabulary}& 25& (as in general scale)\\
\hline
\hline
{\bf Language}&30&  ( -"-          -"-)\\
\hline
\hline
{\bf Mechanics}&5& ( -"-            -"-)\\
\hline
\end{tabular}

\end{center}
\caption{
Very good $\ge$ 90\%, Average $\ge$ 70\%, Poor $\ge$ 50\%, Passing Level = 
60\%}
\end{table*}


\end{document}