import GradeScale, { GradeScalesTypes, Tuple } from './GradeScale';
/**
 *
 * @param gradeScaleType grade scale type
 * @returns grade scale of provided grade scale name
 */
export declare const getScale: (gradeScaleType: GradeScalesTypes) => GradeScale | null;
/**
 * @deprecated Replace with individual grade scale's getScore
 * @param grade grade based on grade scale type
 * @param gradeScaleType grade scale type
 * @returns  the score range, allows us to show the range of overlap for other grading systems
 */
export declare const getScore: (grade: string, gradeScaleType: GradeScalesTypes) => number | Tuple;
/**
 * @deprecated Replace with individual grade scale's getScore
 * @param grade grade based on grade scale type
 * @param gradeScaleType grade scale type
 * @returns the average score of the grade for sorting across different scales
 */
export declare const getScoreForSort: (grade: string, gradeScaleType: GradeScalesTypes) => number;
/**
 *
 * @param fromGrade grade based on grade scale type
 * @param fromGradeScaleType grade scale type to convert grade from
 * @param toGradeScaleType grade scale type to convert grade to
 * @returns A scale's grade converted to a different scale's grade
 */
export declare const convertGrade: (fromGrade: string, fromGradeScaleType: GradeScalesTypes, toGradeScaleType: GradeScalesTypes) => string;
export declare const isVScale: (grade: string) => boolean;