--- loncom/html/adm/help/tex/Spreadsheet_Levels.tex	2002/07/22 21:08:18	1.1
+++ loncom/html/adm/help/tex/Spreadsheet_Levels.tex	2017/02/01 17:53:39	1.7
@@ -1,10 +1,46 @@
-The top-level is the "course level" sheet, which is not accessible to
-students. It lists the export rows of all "student level" sheets (the
-sheet that students get to see when they press "GRDS"). These in turn
-import the export rows of all assessment level sheets.
+\label{Spreadsheet_Levels}
 
-The figure shows the spreadsheet hierarchy. 
+Each Student and Assessment level spreadsheets permit sophisticated calculations. The summary values that are to be passed to the parent spreadsheet are summarized in the \textbf{export row} of the sheet. The figure shows the spreadsheet hierarchy and indicates the flow of information. 
 
 \begin{figure}
-\includegraphics{spreadsheet_hierarchy}
-\end{figure}
\ No newline at end of file
+\begin{center}\includegraphics[  width=0.80\paperwidth]{spreadsheet_hierarchy}
+\end{center}
+\end{figure}
+
+\begin{enumerate}
+
+\item \textbf{The Course Spreadsheet}
+
+The course spreadsheet contains all of the summary data for all the students in
+the course.
+
+\item \textbf{The Student Spreadsheet}
+
+The student level spreadsheet summarizes the assessment spreadsheet data for the students.  
+There is only one default student level spreadsheet definition, 
+but the data varies for each student.
+The student spreadsheet is programmed to permit the instructor to assign different
+assessment spreadsheets for different grade categories or other uses.
+The data present in the student spreadsheet is imported from the 
+\textbf{export row} (\ref{Spreadsheet_Export_Row})
+of each assessment spreadsheet for all of the assessments currently in 
+the course.  
+The student spreadsheets pass summary data to the course-level spreadsheet
+via the student spreadsheet \textbf{export row} (\ref{Spreadsheet_Export_Row}).
+
+\item \textbf{The Assessment Spreadsheets}
+
+An assessment-level spreadsheet provides access to all of the parameters
+associated with a student's performance on a particular homework assignment, quiz, 
+or exam.
+Each student has an assessment spreadsheet for every assessment in the course.
+The assessment spreadsheets provide data to their parent, the student level
+spreadsheet, via the assessment spreadsheet \textbf{export row} (\ref{Spreadsheet_Export_Row}). 
+Multiple assessment spreadsheets can be used in a course, facilitating organizing assessments into
+categories or for other purposes.
+
+
+\end{enumerate}
+
+
+