Grade most commonly refers to: *

Grading in education Grading in education is the application of standardized Measurement, measurements to evaluate different levels of student achievement in a course. Grades can be expressed as letters (usually A to F), as a range (for example, 1 to 6), percentage ...

, a measurement of a student's performance by educational assessment (e.g. A, pass, etc.) * A designation for students, classes and curricula indicating the number of the year a student has reached in a given educational stage (e.g. first grade, second grade, K–12, etc.) *

Grade (slope) The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal plane, horizontal or its tangent. I ...

, the steepness of a slope * Graded voting Grade or grading may also refer to:

Music

* Grade (music), a formally assessed level of profiency in a musical instrument * Grade (band), punk rock band * Grades (producer), British electronic dance music producer and DJ

Science and technology

Biology and medicine

* Grading (tumors), a measure of the aggressiveness of a tumor in medicine * The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach * Evolutionary grade, a paraphyletic group of organisms

Geology

* Graded bedding, a description of the variation in grain size through a bed in a sedimentary rock * Metamorphic grade, an indicatation of the degree of metamorphism of rocks * Ore grade, a measure that describes the concentration of a valuable natural material in the surrounding ore

Engineering and technology

Grade (fasteners) A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force (torque) to the screw head, head. The most common uses of screws are to hold objects together and there are many forms for a variety ...

, the grade of nuts and bolts refers to the strength and material * Grading (earthworks), the preparation and leveling of land for construction, especially of roads and railways * Grade separation, aligning a junction of two or more transport axes at different heights to facilitate traffic flow * Cetane rating, a measure of diesel fuel's combustion quality *

Octane rating An octane rating, or octane number, is a standard measure of a liquid fuel, fuel's ability to withstand Compression ratio, compression in an internal combustion engine without causing engine knocking. The higher the octane number, the more compres ...

, also called gasoline grade, the measure of the autoignition resistance of gasoline (petrol) and other fuels used in spark-ignition internal combustion engines *

Grade of service In telecommunications engineering, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS). Grade of service is the probability of a cal ...

, the quality of voice service in telecommunications *

Color grading Color grading is a post-production process common to filmmaking and video editing of altering the appearance of an image for presentation in different environments on different devices. Various attributes of an image such as contrast (vision), ...

, the process of altering and enhancing the color of a motion picture, video image, or still image * A rating of

lumber Lumber is wood that has been processed into uniform and useful sizes (dimensional lumber), including beams and planks or boards. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, window frames). ...

(timber) quality and strength

Mathematics

Grade (angle) In trigonometry, the gradianalso known as the gon (), grad, or gradeis a unit of measurement of an angle, defined as one-hundredth of the right angle; in other words, 100 gradians is equal to 90 degrees. It is equivalent to of a turn, of ...

, a unit for the measurement of plane angles *

Grade (ring theory) In commutative and homological algebra, the grade of a finitely generated module M over a Noetherian ring R is a cohomological invariant defined by vanishing of Ext-modules \textrm\,M=\textrm_R\,M=\inf\left\. For an ideal I\triangleleft ...

, a cohomological invariant in commutative algebra *

Graded (mathematics) In mathematics, the term "graded" has a number of meanings, mostly related: In abstract algebra, it refers to a family of concepts: * An algebraic structure X is said to be I-graded for an index set I if it has a gradation or grading, i.e. a dec ...

, with several meanings *

Graded poset In mathematics, in the branch of combinatorics, a graded poset is a partially-ordered set (poset) ''P'' equipped with a rank function ''ρ'' from ''P'' to the set N of all natural number In mathematics, the natural numbers are the numbers 0 ...

, a partially ordered set equipped with a rank function, sometimes called a ranked poset *

Graded vector space In mathematics, a graded vector space is a vector space that has the extra structure of a ''grading'' or ''gradation'', which is a decomposition of the vector space into a direct sum of vector subspaces, generally indexed by the integers. For ...

, a vector space with an extra piece of structure *

Graded algebra In mathematics, in particular abstract algebra, a graded ring is a ring such that the underlying additive group is a direct sum of abelian groups R_i such that . The index set is usually the set of nonnegative integers or the set of integers, ...

, an algebra over a field (or ring) with an extra piece of structure

Linguistics

* Grade, each of the "levels" of vowel gradation, especially in Indo-European * Grade, or degree, one of the comparative forms of an adjective

Sport

Grade (climbing) Many climbing routes have grades for the technical difficulty, and in some cases for the risks, of the route. The first ascent, first ascensionist can suggest a grade but it will be amended for the ''consensus view'' of subsequent ascents. W ...

, a climber's assessment of the difficulty and danger of climbing a hill * Grade (bouldering), a climber's assessment of the difficulty and danger of climbing a route which are distinct from those used in regular climbing * Degree of difficulty, in several sports * International Scale of River Difficulty, also called grade, a standardized scale used to rate the safety of a stretch of river, or a single rapid

Other uses

* Grade (crime), the degree of seriousness of a crime *

Military rank Military ranks is a system of hierarchy, hierarchical relationships within armed forces, police, Intelligence agency, intelligence agencies, paramilitary groups, and other institutions organized along military organisation , military lines, such ...

* Grade (surname) (includes a list of people with the name) * Grade, Cornwall, a village in the UK *

Coin grading Coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness ...

, the process of determining the grade or condition of a coin, the key factor in its value *

Food grading Food grading involves the inspection, assessment and sorting of various foods regarding quality, freshness, legal conformity and market value.Saravacos, George D.; Maroulis, Zacharias B. (2011''Food Process Engineering Operations'' CRC Press ...

, the inspection, assessment and sorting of foods to determine quality, freshness, legal conformity and market value * Pattern grading, the scaling of a pattern to a different size in the clothing or footwear industry